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#ifndef UFTRACE_KERNEL_PARSER_H
#define UFTRACE_KERNEL_PARSER_H
#include <stdbool.h>
#include <stdint.h>
#include "uftrace.h"
#ifdef HAVE_LIBTRACEEVENT
#include <event-parse.h>
#include <kbuffer.h>
/*
* Wrappers for kernel function/event parser (using libtraceevent).
*/
struct uftrace_kernel_parser {
/* global data */
struct tep_handle *tep;
struct trace_seq seqbuf;
struct uftrace_record rec;
size_t pagesize;
/* per-cpu data */
struct kbuffer **kbufs;
int *fds;
void **mmaps;
int64_t *offsets;
int64_t *sizes;
int *missed_events;
};
int kparser_init(struct uftrace_kernel_parser *kp);
int kparser_exit(struct uftrace_kernel_parser *kp);
bool kparser_ready(struct uftrace_kernel_parser *kp);
int kparser_strerror(struct uftrace_kernel_parser *kp, int err, char *buf, int len);
void kparser_set_info(struct uftrace_kernel_parser *kp, int page_size, int long_size,
bool is_big_endian);
int kparser_read_header(struct uftrace_kernel_parser *kp, char *buf, int len);
int kparser_read_event(struct uftrace_kernel_parser *kp, const char *sys, char *buf, int len);
int kparser_prepare_buffers(struct uftrace_kernel_parser *kp, int nr_cpus);
int kparser_release_buffers(struct uftrace_kernel_parser *kp, int nr_cpus);
int kparser_prepare_cpu(struct uftrace_kernel_parser *kp, const char *filename, int cpu);
int kparser_release_cpu(struct uftrace_kernel_parser *kp, int cpu);
void kparser_register_handler(struct uftrace_kernel_parser *kp, const char *sys, const char *event);
int kparser_read_data(struct uftrace_kernel_parser *kp, struct uftrace_data *handle, int cpu,
int *tid);
int kparser_data_size(struct uftrace_kernel_parser *kp, int cpu);
int kparser_missed_events(struct uftrace_kernel_parser *kp, int cpu);
void kparser_clear_missed(struct uftrace_kernel_parser *kp, int cpu);
void *kparser_trace_buffer(struct uftrace_kernel_parser *kp);
int kparser_trace_buflen(struct uftrace_kernel_parser *kp);
void *kparser_find_event(struct uftrace_kernel_parser *kp, int evt_id);
char *kparser_event_name(struct uftrace_kernel_parser *kp, void *evt, char *buf, int len);
/* low-level APIs - not encouraged to use */
int64_t __kparser_curr_offset(struct uftrace_kernel_parser *kp, int cpu);
void *__kparser_read_offset(struct uftrace_kernel_parser *kp, int cpu, int64_t off);
void *__kparser_next_event(struct uftrace_kernel_parser *kp, int cpu);
int __kparser_event_size(struct uftrace_kernel_parser *kp, int cpu);
#else /* HAVE_LIBTRACEEVENT */
struct uftrace_kernel_parser {
struct uftrace_record rec;
};
static inline int kparser_init(struct uftrace_kernel_parser *kp)
{
return -1;
}
static inline int kparser_exit(struct uftrace_kernel_parser *kp)
{
return -1;
}
static inline bool kparser_ready(struct uftrace_kernel_parser *kp)
{
return false;
}
static inline int kparser_strerror(struct uftrace_kernel_parser *kp, int err, char *buf, int len)
{
buf[0] = '\0';
return 0;
}
static inline void kparser_set_info(struct uftrace_kernel_parser *kp, int page_size, int long_size,
bool is_big_endian)
{
}
static inline int kparser_read_header(struct uftrace_kernel_parser *kp, char *buf, int len)
{
return -1;
}
static inline int kparser_read_event(struct uftrace_kernel_parser *kp, const char *sys, char *buf,
int len)
{
return -1;
}
static inline int kparser_prepare_buffers(struct uftrace_kernel_parser *kp, int nr_cpus)
{
return -1;
}
static inline int kparser_release_buffers(struct uftrace_kernel_parser *kp, int nr_cpus)
{
return -1;
}
static inline int kparser_prepare_cpu(struct uftrace_kernel_parser *kp, const char *filename,
int cpu)
{
return -1;
}
static inline int kparser_release_cpu(struct uftrace_kernel_parser *kp, int cpu)
{
return -1;
}
static inline void kparser_register_handler(struct uftrace_kernel_parser *kp, const char *sys,
const char *event)
{
}
static inline int kparser_read_data(struct uftrace_kernel_parser *kp, struct uftrace_data *handle,
int cpu, int *tid)
{
return -1;
}
static inline int kparser_data_size(struct uftrace_kernel_parser *kp, int cpu)
{
return 0;
}
static inline int kparser_missed_events(struct uftrace_kernel_parser *kp, int cpu)
{
return 0;
}
static inline void kparser_clear_missed(struct uftrace_kernel_parser *kp, int cpu)
{
}
static inline void *kparser_trace_buffer(struct uftrace_kernel_parser *kp)
{
return NULL;
}
static inline int kparser_trace_buflen(struct uftrace_kernel_parser *kp)
{
return 0;
}
static inline void *kparser_find_event(struct uftrace_kernel_parser *kp, int evt_id)
{
return NULL;
}
static inline char *kparser_event_name(struct uftrace_kernel_parser *kp, void *evt, char *buf,
int len)
{
return NULL;
}
static inline int64_t __kparser_curr_offset(struct uftrace_kernel_parser *kp, int cpu)
{
return -1;
}
static inline void *__kparser_read_offset(struct uftrace_kernel_parser *kp, int cpu, int64_t off)
{
return NULL;
}
static inline void *__kparser_next_event(struct uftrace_kernel_parser *kp, int cpu)
{
return NULL;
}
static inline int __kparser_event_size(struct uftrace_kernel_parser *kp, int cpu)
{
return 0;
}
#endif /* HAVE_LIBTRACEEVENT */
#endif /* UFTRACE_KERNEL_PARSER_H */
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